Key

ExpandoMetaClass - Dynamic method/property name creation

Since Groovy allows you to use Strings as property names this in turns allows you to dynamically create method and property names at runtime.

The Basics

To create a method with a dynamic name simply use Groovy's feature of reference property names as strings. You can combine this with Groovy's string interpolation (Gstrings) to create method and property names on the fly:

So what we do with these classes is to evaluate the convention and add "encodeAsXXX" methods to every object based on the first part of the name of the codec class such as "encodeAsHTML". The pseudo code to achieve this is below: